▎ 摘　　要

NOVELTY - Preparing and purifying nanoparticles of plasma ammoniated graphene-magnetic core structure, comprises (a) placing the nanoparticles of graphene-magnetic core structure in the processing chamber, so that the processing gas flows into the processing chamber; (b) using a plasma excitation source to excite the processing gas to form a plasma, and exposing the nanoparticles of the graphene-magnetic core structure to the plasma environment, and carrying out ammonia modification of nanoparticles with graphene-magnetic core structure; (c) mixing the plasma-treated graphene-magnetic core structure nanoparticles with water, subjecting the mixture to high-speed shear dispersion, and carrying out magnetic separation to remove non-magnetic free graphene to obtain magnetic material which is the crude product; and (d) mixing crude product with an aqueous ethanol solution, and subjecting the mixture to high-pressure homogenization and magnetic separation, and removing the non-magnetic free graphene. USE - The method is useful for preparing and purifying nanoparticles of plasma ammoniated graphene-magnetic core structure. ADVANTAGE - The method is simple in process, mild and controllable, high in yield, and can be prepared to obtain high-purity aminated modified nano-graphene of the magnetic core structure. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating the method for preparing and purifying nanoparticles of plasma ammoniated graphene-magnetic core structure (Drawing includes non-English language text).